CN116066351A - One-way valve assembly of plunger diaphragm pump - Google Patents

One-way valve assembly of plunger diaphragm pump Download PDF

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Publication number
CN116066351A
CN116066351A CN202211638096.5A CN202211638096A CN116066351A CN 116066351 A CN116066351 A CN 116066351A CN 202211638096 A CN202211638096 A CN 202211638096A CN 116066351 A CN116066351 A CN 116066351A
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CN
China
Prior art keywords
valve
liquid
liquid outlet
way valve
liquid inlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211638096.5A
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Chinese (zh)
Inventor
李钰龙
刘凯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Special Innovation Material Technology Co ltd
Original Assignee
Shandong Special Innovation Material Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong Special Innovation Material Technology Co ltd filed Critical Shandong Special Innovation Material Technology Co ltd
Priority to CN202211638096.5A priority Critical patent/CN116066351A/en
Publication of CN116066351A publication Critical patent/CN116066351A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/109—Valves; Arrangement of valves inlet and outlet valve forming one unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/023—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms double acting plate-like flexible member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/028—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms with in- or outlet valve arranged in the plate-like flexible member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1037—Flap valves
    • F04B53/1047—Flap valves the valve being formed by one or more flexible elements
    • F04B53/106—Flap valves the valve being formed by one or more flexible elements the valve being a membrane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/1401—Check valves with flexible valve members having a plurality of independent valve members

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating Pumps (AREA)

Abstract

The invention aims to solve the problem of providing a one-way valve assembly of a plunger diaphragm pump, which is characterized in that an elastic one-way valve diaphragm is used for replacing a spring, so that the phenomena of spring deflection, aging and failure of matching connection between the spring and a backflow seat are avoided, the service life of the one-way valve is prolonged; a funnel-shaped liquid outlet valve core is arranged in the liquid outlet, an inner cavity opening of the liquid outlet valve faces away from the pump cavity, and a plurality of liquid outlet holes are formed in the side wall of the liquid outlet valve; the inner cavities of the liquid inlet valve and the liquid outlet valve are respectively provided with a one-way valve membrane which can be matched with the liquid inlet valve and the liquid outlet valve, and the one-way valve membranes have elasticity.

Description

One-way valve assembly of plunger diaphragm pump
Technical Field
The invention relates to a feeding system of pharmaceutical chemical reaction equipment, in particular to a plunger diaphragm pump, and particularly relates to a one-way valve assembly of the plunger diaphragm pump.
Background
Diaphragm pumps are a particular form of volumetric pump that rely on the back and forth movement of a diaphragm to change the volume of a working chamber to draw in and expel fluid. As disclosed in the prior art (patent publication No. CN 207437316U), an electric diaphragm pump is provided, wherein a through hole is provided between the water-passing cavity and the pump cavity, and a diaphragm is provided at the position of the water-passing cavity opposite to the through hole. The common diaphragm pump comprises a pump body with a liquid inlet channel and a liquid outlet channel, a one-way valve is arranged in the liquid inlet channel and the liquid outlet channel of the pump body, and the one-way valve usually consists of a spring and a sealing diaphragm, and the sealing diaphragm is sealed with a through hole through the spring.
However, there are the following drawbacks during long-term use: 1. the spring may be skewed and the sealing membrane may not seal the return orifice; 2. the spring is easy to age, the service life of the reflux device is low, the spring cannot be fully sprung, and the sealing diaphragm cannot block the reflux hole. These can cause a decrease in diaphragm pump flow or a diaphragm pump failure.
Disclosure of Invention
The invention aims to solve the problem of providing the one-way valve assembly of the plunger diaphragm pump, which uses the elastic one-way valve diaphragm to replace a spring, so that the phenomena of spring deflection, aging and failure of the matching connection of the spring and a backflow seat can not occur any more, and the service life of the one-way valve is prolonged.
The invention is realized by the following technical scheme:
the one-way valve assembly of the plunger diaphragm pump comprises a valve plate arranged on a pump cavity, wherein the valve plate is provided with a liquid inlet and a liquid outlet, a funnel-shaped liquid inlet valve core is arranged in the liquid inlet, an inner cavity opening of the liquid inlet valve faces to the pump cavity, and a plurality of liquid inlet holes are formed in the side wall of the liquid inlet valve;
a funnel-shaped liquid outlet valve core is arranged in the liquid outlet, an inner cavity opening of the liquid outlet valve faces away from the pump cavity, and a plurality of liquid outlet holes are formed in the side wall of the liquid outlet valve;
the inner cavities of the liquid inlet valve and the liquid outlet valve are respectively provided with a one-way valve membrane which can be matched with the liquid inlet valve and the liquid outlet valve, and the one-way valve membranes have elasticity.
Further, the liquid inlet and the liquid outlet are distributed up and down, and the one-way valve membrane is made of tetrafluoro material.
Further, the number of the liquid inlets and the liquid outlets is multiple, and the liquid inlets and the liquid outlets which are aligned up and down are a group.
Furthermore, the inner side surface of the valve plate is provided with a concave cavity in the surrounding areas of the liquid inlet and the liquid outlet of the same group.
Further, the device further comprises a rear pump plate, wherein the rear pump plate is attached to the inner side surface of the valve plate, and a plurality of liquid passing holes which are communicated with the concave cavities are formed in the rear pump plate.
Furthermore, the central positions of the liquid inlet valve core and the liquid outlet valve core are respectively provided with a positioning hole, the outer end part of the center of the one-way valve diaphragm is provided with a connecting column, and the connecting column can be matched and fixed in the positioning holes.
Compared with the prior art, the invention has the following beneficial effects:
1. when the pump cavity is internally pressurized, the check valve diaphragm corresponding to the liquid inlet valve is opened, liquid enters the pump body from the liquid inlet hole, and when the pump cavity is pressurized, the check valve diaphragm corresponding to the liquid outlet valve is opened, and the liquid flows out of the pump body from the liquid outlet hole;
the elastic one-way valve diaphragm is used for replacing the structure of the spring matched sealing diaphragm in the prior art, so that the phenomena of spring deflection, aging and failure of matched connection of the spring and the reflux seat are avoided, and the service life of the one-way valve is prolonged;
2. the one-way valve diaphragm is made of tetrafluoro material, so that acid and alkali corrosion resistance is guaranteed, and the service life is prolonged;
3. the liquid inlet and the liquid outlet of alignment from top to bottom are a set of, and the medial surface of valve plate has the cavity in regional processing around the inlet and the liquid outlet of same group, has seted up a plurality of intercommunication on the back pump board the via hole of cavity can guarantee that liquid stranding business turn over same group's inlet and liquid outlet, improves work efficiency.
Drawings
FIG. 1 is a split schematic view of a one-way valve assembly of a plunger diaphragm pump according to the present invention;
FIG. 2 is a schematic view of a valve plate (without a check valve diaphragm) according to the present invention;
FIG. 3 is a schematic view of the inside of a check valve assembly of the plunger diaphragm pump of the present invention;
FIG. 4 is a schematic view of a one-way valve assembly for a plunger diaphragm pump of the present invention;
in the figure: 1. the valve plate, 2, the inlet, 3, the liquid outlet, 4, the back pump board, 5, the cavity, 6, the inlet valve core, 7, the inlet port, 8, the check valve diaphragm, 9, the outlet valve core, 10, the outlet port, 11, the spliced pole, 12, the pump chamber, 13, the diaphragm.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings of the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.
In the description of the invention, it should be understood that the terms "front," "rear," "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. The invention will be further described with reference to the drawings and examples.
As shown in fig. 1-3, this embodiment discloses a check valve assembly of a plunger diaphragm pump, which includes a valve plate 1 and a rear pump plate 4, three liquid inlets 2 and three liquid outlets 3 are provided in the valve plate 1, the liquid inlets 2 and the liquid outlets 3 are distributed up and down and aligned with each other, the liquid inlets 2 and the liquid outlets 3 aligned up and down are a group, and a concave cavity 5 is processed on an inner side surface (i.e. a side close to a pump cavity 12) of the valve plate 1 in a region around the liquid outlets 3 and the liquid outlets 3 of the same group. The rear pump plate 4 is attached to the inner side surface of the valve plate 1, three liquid passing holes are formed in the rear pump plate 4, and each liquid passing hole is correspondingly communicated with one concave cavity 5.
Wherein, a funnel-shaped liquid inlet valve core 6 is arranged in each liquid inlet 2. The inner cavity opening of the liquid inlet valve faces the pump cavity 12, a plurality of liquid inlet holes 7 are formed in the side wall of the liquid inlet valve, and positioning holes are formed in the center of the liquid inlet valve core 6. The check valve membrane 8 which can be matched with the liquid inlet valve is arranged on the inner cavity wall of the liquid inlet valve, the check valve membrane 8 has elasticity, in the embodiment, the check valve membrane 8 is made of a tetrafluoro material, has good elasticity, has acid and alkali corrosion resistance, and prolongs the service life. The connecting column 11 is processed at the outer end part of the center of the one-way valve membrane 8, the connecting column 11 can be matched and fixed in the positioning hole, and in an initial state, the surface of the one-way valve membrane 8 can be attached to the surface of the liquid inlet valve core 6 to realize the sealing of the liquid inlet hole 7.
A funnel-shaped liquid outlet valve core 9 is arranged in each liquid outlet 3, an inner cavity opening of the liquid outlet valve faces away from the pump cavity 12, a plurality of liquid outlet holes 10 are formed in the side wall of the liquid outlet valve, and positioning holes are formed in the center of the liquid outlet valve core 9. The inner cavity walls of the liquid outlet valve are provided with one-way valve membranes 8 which can be matched with the liquid outlet valve, the one-way valve membranes 8 have elasticity, and in the embodiment, the material and the installation mode of the one-way valve membranes 8 are the same as those of the one-way valve membranes 8 of the liquid inlet valve. In the initial state, the surface of the one-way valve membrane 8 can be attached to the surface of the liquid outlet valve core 9 to realize the sealing of the liquid outlet hole 10.
Taking the case that the check valve assembly of the present invention is mounted on a plunger diaphragm pump as shown in fig. 4, the check valve assembly is mounted on the side surface of the pump cavity 12 in a sealing manner, the liquid inlet 2 corresponds to an external liquid inlet pipe (not shown in the figure), and the liquid outlet 3 corresponds to an external liquid outlet pipe (not shown in the figure), and the working process is as follows:
through the back and forth movement of the diaphragm 13, when negative pressure is presented in the pump cavity 12, the one-way valve diaphragm 8 corresponding to the liquid inlet valve is opened, liquid enters the pump body from the liquid inlet hole 7, when positive pressure is presented in the pump body, the one-way valve diaphragm 8 corresponding to the liquid outlet valve is opened, and the liquid flows out of the pump body from the liquid outlet hole 7. The elastic one-way valve membrane 8 replaces the structure of the spring matched sealing membrane in the prior art, so that the phenomena of spring deflection, aging and failure of matched connection of the spring and the reflux seat can not occur any more, and the service life of the one-way valve is prolonged.

Claims (6)

1. The one-way valve assembly of the plunger diaphragm pump is characterized by comprising a valve plate arranged on a pump cavity, wherein the valve plate is provided with a liquid inlet and a liquid outlet, a funnel-shaped liquid inlet valve core is arranged in the liquid inlet, an inner cavity opening of the liquid inlet valve faces the pump cavity, and a plurality of liquid inlet holes are formed in the side wall of the liquid inlet valve;
a funnel-shaped liquid outlet valve core is arranged in the liquid outlet, an inner cavity opening of the liquid outlet valve faces away from the pump cavity, and a plurality of liquid outlet holes are formed in the side wall of the liquid outlet valve;
the inner cavities of the liquid inlet valve and the liquid outlet valve are respectively provided with a one-way valve membrane which can be matched with the liquid inlet valve and the liquid outlet valve, and the one-way valve membranes have elasticity.
2. The one-way valve assembly of claim 1, wherein the liquid inlet and the liquid outlet are vertically distributed, and the one-way valve membrane is made of a tetrafluoro material.
3. The one-way valve assembly of claim 2, wherein the number of liquid inlets and liquid outlets is plural, and the liquid inlets and liquid outlets aligned up and down are a set.
4. A one-way valve assembly as recited in claim 3, wherein the inner side of the valve plate is formed with a cavity in the area surrounding the same set of fluid inlet and fluid outlet.
5. The one-way valve assembly of claim 4, further comprising a rear pump plate attached to an inner side of the valve plate, the rear pump plate having a plurality of fluid passages communicating with the cavity.
6. The one-way valve assembly according to any one of claims 1 to 5, wherein the center positions of the liquid inlet valve core and the liquid outlet valve core are respectively provided with a positioning hole, the center outer end part of the one-way valve membrane is provided with a connecting column, and the connecting column can be matched and fixed in the positioning holes.
CN202211638096.5A 2022-12-20 2022-12-20 One-way valve assembly of plunger diaphragm pump Pending CN116066351A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211638096.5A CN116066351A (en) 2022-12-20 2022-12-20 One-way valve assembly of plunger diaphragm pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211638096.5A CN116066351A (en) 2022-12-20 2022-12-20 One-way valve assembly of plunger diaphragm pump

Publications (1)

Publication Number Publication Date
CN116066351A true CN116066351A (en) 2023-05-05

Family

ID=86172531

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211638096.5A Pending CN116066351A (en) 2022-12-20 2022-12-20 One-way valve assembly of plunger diaphragm pump

Country Status (1)

Country Link
CN (1) CN116066351A (en)

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